Toothbrush



FIG. 1 is a perspective view of the front and one side of a toothbrush showing our new design;

FIG. 2 is a side elevational view thereof, the opposite side being a mirror image of the side shown;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a sectional view taken along the line IV--IV of FIG. 2. 

The ornamental design for a toothbrush, as shown and described. 